Hey, Banjorune!
The relationship between the characters in Lewd Island is not defined, and it’s up to the players to interpret it in their own way.
There are a couple of hints that suggest the characters already knew each other before the airplane accident, and that Edward was familiar with Bella’s mother. The story of Lewd Island is a fantasy about an older man and a younger woman stuck on a deserted island.
Themes like incest are not what we want to be associated with, and we will see what we can do to clear up any doubts about this.
Thank you very much for the comment!